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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">medgen-266</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ СЛУЧАИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group></article-categories><title-group><article-title>Идентификации двух мутаций в транс-положении в гене CYP21A2 у плода без врожденной дисфункции коры надпочечников (ВДКН). Случай пренатальной диагностики</article-title><trans-title-group xml:lang="en"><trans-title>Two CYP21A2 mutations in trans-configuration were identified in the fetus without congenital adrenal hyperplasia (CAH). A case of prenatal diagnosis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осиновская</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Osinovskaya</surname><given-names>N. S.</given-names></name></name-alternatives><email xlink:type="simple">natosinovskaya@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Султанов</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Sultanov</surname><given-names>I. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт акушерства, гинекологии и репродуктологии им. Д.О. Отта»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>19</day><month>09</month><year>2017</year></pub-date><volume>16</volume><issue>5</issue><fpage>39</fpage><lpage>41</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Осиновская Н.С., Султанов И.Ю., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Осиновская Н.С., Султанов И.Ю.</copyright-holder><copyright-holder xml:lang="en">Osinovskaya N.S., Sultanov I.Y.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.medgen-journal.ru/jour/article/view/266">https://www.medgen-journal.ru/jour/article/view/266</self-uri><abstract><p>Врождённая дисфункция коры надпочечников (ВДКН) является наследственным заболеванием с аутосомно-рецессивным типом наследования. В 95% случаев причиной являются мутации в гене CYP21A2, картированном на коротком плече хромосомы 6 в локусе 6р21.3. Целью работы было проведение пренатального исследования в семье Х., имеющей ребёнка с сольтеряющей формой ВДКН. Для идентификации мутаций в гене CYP21A2 и анализа полиморфизма гена MICA использовали метод ПЦР-ПДРФ анализа, для выявления количества копий гена - метод ПЦР в реальном времени. В образцах ДНК из ворсин хориона идентифицированы 2 разные мутации в гене CYP21A2 и показано наличие одной «здоровой» копии этого гена, полученной от отца. По результатам генетического анализа сделан вывод об отсутствии ВДКН у плода. Исследование верифицировано после рождения.</p></abstract><trans-abstract xml:lang="en"><p>Congenital adrenal hyperplasia (CAH) is an autosomal recessive congenital disorder. CYP21A2 gene mutations cause 95% of CAH cases. CYP21A2 gene is located on the short arm of chromosome 6 (6p21.3). Here, we present results of prenatal genetic analysis in a family X. with a child suffering by salt-wasting CAH form. CYP21A2 mutations and MICA polymorphisms were identified by PCR-RFLP. Gene copy number was determined by real-time PCR. Two different CYP21A2 mutations in trans-configuration along with a «healthy» gene copy, which was inherited from the father, were identified in the DNA samples from chorionic villi. We have concluded that the fetus has no CAH. The absence of CAH was confirmed after birth.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ВДКН</kwd><kwd>CYP21A2</kwd><kwd>мутация</kwd><kwd>пренатальная диагностика</kwd><kwd>CAH</kwd><kwd>CYP21A2</kwd><kwd>mutation</kwd><kwd>prenatal diagnosis</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">White PC, New MI, Dupont B. Structure of human steroid 21-hydroxylase genes. 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